Block-molding machine.



A. MOHENGH.

. BLOCK MOLDING MACHINE. APPLICATION FILED JULY 13, 1911.

1,028,241 Patented June 4, 1912.

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A. MGHENG H. BLOCK MOLDING MACHINE.

APPLICATION FILED JULY 13, 1911.

' 1,028,241, Patented June 4,1912.

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human sraans PATENT enrich.

ANDREW McI-IENCH, OF FARGO, NORTH DAKOTA.

BLOCK-MOLDING MACHINE.

T 0 all whom it may concern:

Be it known that 1, ANDREW MoHENoH, a citizen of the United States,residing at Fargo, in the county of Cass and State of North Dakota, haveinvented certain new and useful Improvements in Block-Molding Machines,of which the following is a specification.

This invention has for its object to pro vide in a block molding machinean improved carrier for the mold, the same being designed to simplifyand expedite the op eration of the machine; and furthermore, to provideimproved means for inserting the core into and withdrawing the same fromthe mold.

The invention also has for its object to provide in a machine of thekind stated, a novel construction and arrangement of parts to behereinafter described and claimed.

In order that the invention may be better understood, reference is hadto the accompanying drawings forming a part of this specification, inwhich drawings Figure 1- is a front elevation of the machine. Fig. 2 isa cross section on the line 2-2 of Fig. 1. Fig. 3is a plan view of thehopper hereinafter referred to.

Referring specifically to the drawings, 5 denotes a carrier on which themolds 6 are supported during the filling and tamping operation. Thecarrier is mounted on wheels 7 which travel on rails 8, the latter beingso located that the carrier may be pushed under the filling and tampingapparatus and removed from under the same after the block is finished.The carrier is of sutlicient length to support two molds in order toexpedite the operation, as will be presently described. The molds arerectangular boxes, which are open at the top and bottom, and seat onpallets 9, which latter are removably supported on the carrier. Theshape of the mold boxes may be varied according to the shape of theblocks desired. The carrier supports cores 10, a separate core beingprovided for each mold. From the bottom of the cores extend verticalrack bars 11, which face each other, and between which is located a gear12 in mesh therewith. It will therefore be seen that when the gear isrotated in one direction, one of the cores will be raised and the otherlowered, and when the gear is rotated in the opposite direction, thefirst mentioned core will be lowered and the other one raised. The gearis supported Specification of Letters Patent.

Application filed July 13, 1911.

Patented June a, 1912.

Serial No. 638,386.

.of parallel joists or horizontal beams located a suitable distanceabove the floor, and

spaced from each other laterally. The joists are connected by crosspieces 18, and the latter support vertical beams or standards 19 whichare spaced apart and are provided with guides in which the supportingframeof the tamping mechanism is mounted. This supporting framecomprises vertical bars 20 connected by top and bottom cross bars 21 and22, respectively, suitably braced. The frame is slidable verticallybetween the standards 19, on opposite sides of which latter are securedguide strips 23, between which the bars 20 are slidably mounted. Thejoists 17 support the upper ends of the standards 19, the lower ends ofwhich may be supported on the floor of the shed or other structure inwhich the machine is located.

The tampers are indicated at 24, four of such being provided as shown,and they being grouped to conform to the shape of the block to bemolded. To the top of each tamper is secured a stem 25 which isconnected to a rocker arm 26 fixed to a rock shaft 27 journaled insuitable bearings carried by the bars 20. These bars also carry bearingsin which is ournaled a shaft 28 having a crank 29 which is connected bya pitman 80 to an arm 31 projecting from and fixed to the shaft 27. Bymeans of this connection between the two shafts, the shaft 27 is rockedwhen the shaft 28 is rotated. On the last mentioned shaft is a pulley 33which is connected to a suitable source of power. In the cross bar 22are openings through which the stems 25 loosely pass, and in which theyare guided when in motion. The tampers are reciprocated to operate onthe material in the mold through the connection between the shaft 27 andthe stems 25. The mechanism herein described is suspended from a pulley34 by means of a rope or cable 35, connected at one of its ends to thecross bar 21, the other end of the cable being made fast in any suitablemanner to support the mechanism. The pulley 34 is carried by one of therafters 36 of the shed or other structure in which the machine islocated. By thus suspending the tamping mechanism, it is possible toelevate the same after the block has been finished, the purpose of thisbeing to raise the tampers out of the Way of the mold and thusfacilitate the removal of the latter.

The filling mechanism comprises a spout 37 discharging into a box 38which is stationary and has an open bottom. The box is situated abovethe mold to be filled so as to discharge thereinto. The material isdischarged from a mixer 39 into the upper end of the spout, and thelatter carries the material to the receptacle 38 through which it isdischarged into the mold. In order to direct the material into the mold,a hopper 40 is loosely mounted on the top thereof. This hopper iscarried by rods all passing loosely through the cross bar 22 and havingtheir upper ends provided with nuts 4C2. In the hopper is a spreader 43which covers the top of the core 10, and serves to scatter the materialinto the mold. The box 38 extends loosely through an opening 44 in thecross bar 22 so that the latter may be elevated and lowered with thetamping mechanism.

In operation, the tamping mechanism and the hopper 40 being elevated,the carrier 5 is pushed under the same to bring one of the molds 6 intofilling position. The lever 15 is operated to insert the correspondingcore 10 into the mold, and to retract the other core. It will be notedthat the other mold is also in position on the carrier and the core ofthis mold is retracted. The tamping mechanism is now lowered, whichplaces the hopper on top of the mold to be filled, after which thefilling and tamping operation may be started. When the block isfinished, the tamping mechanism will be elevated so that the tampersclear the mold. The cross bar 22, upon moving upwardly,

strikes the nuts 42, and through the stems 45 25 lifts the hopper 40 offthe filled mold. The carrier may now be pushed sidewise to remove thefilled mold from under the filling and tamping mechanism, and to placethe other mold lnto position thereunder to be filled. The core is nowinserted into the next mold to be filled, whereupon the core in thefilled mold is withdrawn. The filling and tamping mechanism may now belowered to operate on the next mold, after which the mechanism iselevated as before, to permit removal of the filled mold and thepositioning of another mold for filling. The filled molds are opened andthe blocks removed as fast as they are carried away from the filling andtamping 'mechanism, and they are replaced to be again filled.

It will be evident from the foregoing that the operation of filling themold and tamping the material is easily and quickly effected,'the moldsbeing placed in position for filling and removal of the blocks bypushing the carrier 5 back and forth.

I claim:

In a block molding machine, a vertically slidable frame including across-bar having an opening, a tamping mechanism carried by the frame, amold, a stationary receptacle located above the mold and extendingloosely into the opening of the aforesaid cross-bar, said receptaclereceiving the material and delivering the same into the mold, a hopperloosely supported on the mold,

stems extending from the hopper and having a sliding engagement with theaforesaid cross-bar, and abutments on the stems above l the cross-bar.

In testimony whereof I aifix my signature in presence of two witnesses.

ANDREIV MOHENCH. Witnesses: F RED J. KRoGH,

PETER PIOKTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

